Patents by Inventor Cas BAKKER

Cas BAKKER has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • DC to DC converter sourcing variable DC link voltage
    Patent number: 11336181
    Abstract: An inverter-converter system includes a DC source, a DC to DC boost converter, a DC link capacitor, an inverter circuit, a variable speed electric machine, and a controller. The DC to DC boost converter receives an input DC voltage from the DC source. The inverter circuit converts the variable boosted voltage to an AC voltage to drive the variable speed electric machine. The controller senses a plurality of parameters from the variable speed electric machine, and controls the DC to DC boost converter to boost up the input DC voltage to a variable output voltage based on the plurality of parameters and/or the voltage (or load) needed by the variable speed electric machine. The design of the inverter-converter system can achieve an electrical efficiency and cost savings for the overall system.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: May 17, 2022
    Assignee: Thermo King Corporation
    Inventors: Ryan Wayne Schumacher, Johannes Hendricus Vissers, Cas Bakker
  • DC TO DC CONVERTER SOURCING VARIABLE DC LINK VOLTAGE
    Publication number: 20210036615
    Abstract: An inverter-converter system includes a DC source, a DC to DC boost converter, a DC link capacitor, an inverter circuit, a variable speed electric machine, and a controller. The DC to DC boost converter receives an input DC voltage from the DC source. The inverter circuit converts the variable boosted voltage to an AC voltage to drive the variable speed electric machine. The controller senses a plurality of parameters from the variable speed electric machine, and controls the DC to DC boost converter to boost up the input DC voltage to a variable output voltage based on the plurality of parameters and/or the voltage (or load) needed by the variable speed electric machine. The design of the inverter-converter system can achieve an electrical efficiency and cost savings for the overall system.
    Type: Application
    Filed: October 16, 2020
    Publication date: February 4, 2021
    Inventors: Ryan Wayne SCHUMACHER, Johannes Hendricus VISSERS, Cas BAKKER
  • DC to DC converter sourcing variable DC link voltage
    Patent number: 10840807
    Abstract: An inverter-converter system includes a DC source, a DC to DC boost converter, a DC link capacitor, an inverter circuit, a variable speed electric machine, and a controller. The DC to DC boost converter receives an input DC voltage from the DC source. The inverter circuit converts the variable boosted voltage to an AC voltage to drive the variable speed electric machine. The controller senses a plurality of parameters from the variable speed electric machine, and controls the DC to DC boost converter to boost up the input DC voltage to a variable output voltage based on the plurality of parameters and/or the voltage (or load) needed by the variable speed electric machine. The design of the inverter-converter system can achieve an electrical efficiency and cost savings for the overall system.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: November 17, 2020
    Assignee: Thermo King Corporation
    Inventors: Ryan Wayne Schumacher, Johannes Hendricus Vissers, Cas Bakker
  • DC TO DC CONVERTER SOURCING VARIABLE DC LINK VOLTAGE
    Publication number: 20190097534
    Abstract: An inverter-converter system includes a DC source, a DC to DC boost converter, a DC link capacitor, an inverter circuit, a variable speed electric machine, and a controller. The DC to DC boost converter receives an input DC voltage from the DC source. The inverter circuit converts the variable boosted voltage to an AC voltage to drive the variable speed electric machine. The controller senses a plurality of parameters from the variable speed electric machine, and controls the DC to DC boost converter to boost up the input DC voltage to a variable output voltage based on the plurality of parameters and/or the voltage (or load) needed by the variable speed electric machine. The design of the inverter-converter system can achieve an electrical efficiency and cost savings for the overall system.
    Type: Application
    Filed: September 22, 2017
    Publication date: March 28, 2019
    Inventors: Ryan Wayne SCHUMACHER, Johannes Hendricus VISSERS, Cas BAKKER